“…Intramedullary nailing or open reduction with plate fixation can achieve a high union rate of almost 99% [1,2]. However, there was a high complication rate of 24%, including implant failures such as plate and screw breakage, internal fixator loosening, refracture after plate removal, nonunion, and infection [3]. Femoral nonunion is a functional and economical challenge for the patient, as well as a treatment dilemma for the surgeon, since the causes of the nonunion are complex and multiple factors are involved.…”